The calorimetric equation below calculates a heat transfer involving water. What action does the equation describe?

Question

a. Ice melting

b. water heating

c. vapor condensing

d. water cooling

Answer 1

Since ∆Hfusion is used, and there is no ∆T (i.e. change in temperature), this shows that the process is a phase change. And the phase change would be (a) ice melting because the value is positive meaning heat is added to the system. If negative, the process would be "freezing".